MySQL - insert data from another table merged with constants

Question

I have a temporary table (products_temp) with some data, and I have another table (products) I need to insert the data into. I have some constants I need to set manually on

Answer 1

Use an INSERT ... SELECT statement where you are selecting constant values as well as data from products_temp:

INSERT INTO products (product_data, vendor_id)
    SELECT data, '1' FROM products_temp